'Class agnatha jawless fish' presentation slideshows

The Vertebrates

The Vertebrates. Phylum Chordata Subphylum Vertebrata. The vertebrates are a sub-group of the phylum chordata, creatures with a notochord In vertebrates the notochord disappears as the organism develops and is replaced by a backbone or spine. Features of Vertebrates.

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12.1 - PHYLUM CHORDATA bilateral symmetry

12.1 - PHYLUM CHORDATA bilateral symmetry dorsal nerve cord protected by a supporting rod (vertebrae) ventral heart gill slits, tail and notocord are always part of early embryological stage ? betrays common phylogeny Subphylum Vertebata (see Fig. 4, P. 449)

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Fish and Amphibians

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